Merge pull request #6 from JosephLing/support_for_es2017

removed .flat() to support running eslint in older node versions

Author: paleite

package.json

@@ -55,6 +55,6 @@
     "eslint": ">=7.0.0"
   },
   "engines": {
-    "node": ">=12.0.0"
+    "node": ">=10.23.0"
   }
 }

src/processors.ts

@@ -18,15 +18,15 @@ const diff = {
     messages: Linter.LintMessage[][],
     filename: string
   ): Linter.LintMessage[] =>
-    messages
-      .map((message) =>
+    ([] as Linter.LintMessage[]).concat(
+      ...messages.map((message) =>
         message.filter(({ line }) =>
           getRangesForDiff(getDiffForFile(filename)).some(
             isLineWithinRange(line)
           )
         )
       )
-      .flat(),
+    ),
 
   supportsAutofix: true,
 };
@@ -52,16 +52,15 @@ const staged = {
     messages: Linter.LintMessage[][],
     filename: string
   ): Linter.LintMessage[] =>
-    messages
-      .map((message) =>
+    ([] as Linter.LintMessage[]).concat(
+      ...messages.map((message) =>
         message.filter(({ line }) =>
           getRangesForDiff(getDiffForFile(filename, STAGED)).some(
             isLineWithinRange(line)
           )
         )
       )
-      .flat(),
-
+    ),
   supportsAutofix: true,
 };
 

tsconfig.base.json

@@ -15,6 +15,6 @@
     "sourceMap": true,
     "strict": true,
     "target": "es2017",
-    "lib": ["es2019"]
+    "lib": ["es2017"]
   }
 }